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Firefox for Android Variants

Comparison of Firefox for Android variants, including IronFox and Fennec-FDroid, in terms of telemetry and default privacy hardening

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Jan 31, 2026

What technical differences in permissions and telemetry exist between official Firefox for Android (Fennec) and IronFox builds?

(stock Fennec and the Fennec-FDroid variant) and IronFox diverge most sharply on and default hardening: IronFox ships with telemetry stripped and aggressive protections enabled by default, while Fenne...